Preamp mods

[Strelok]

I have a question about cathode followers.
Kevin says it can be bad for sound, it looks like the spectrum is not so wide anymore.

Does this only play when you feed a tone stack with it?

In the BFX and in say the Sigma a cathode follower is used as a send.
Will that narrow the sound too?


Also, I tried making a Tweed Mixer by adding a triode, with a shared anode of course.
I supposed the gain would be the same but there was a huge increase in volume.
Is that normal when you add a triode that way?



Strelok